Paint is “thinned” by adding the substance upon which the paint is based. If it is water-based paint then water is added; if oil based then mineral spirit or
manufacturerʼs recommended thinner is added. If the paint requires thinning, start with a approximately 10% dilution of the paint. To do this, fill the quart
cup up to the 32 fl oz graduation on the side and add one viscosity cup of thinner - approx 3 fl oz. The viscosity cup supplied with the unit holds 1/10 of a
quart. Block the hole in the viscosity cup with your finger and fill up with the required thinner. Add the thinner to the paint and stir with the paint stirrer
provided, and re-measure the viscosity. If the paint requires additional thinning, repeat this step by adding 5% (5% will be equal to half a viscosity cup)
with the required thinner until desired viscosity is achieved.
If mixing larger batches of paint, for instance a gallon, then add four viscosity cups of appropriate thinner which is approximately 10% of a gallon. If further
thinning is required repeat by adding two viscosity cups (approx 5% of a gallon) until desired viscosity is achieved. We would also recommend you follow
the paint/coating manufacturerʼs guide for thinning in conjunction with a spray gun. If in doubt please contact the manufacturers of the paint.
Tip: When spraying direct from the can, although you do not necessarily need to thin interior latex paints, adding a viscosity cup of water (3 fl oz) to every
gallon of latex and stirring thoroughly will improve the coverage and surface finish.
Always stir your paint with the paint stirrer supplied for approx. 2min.
6
Getting to know your Spray Gun
We recommend you spend some time practicing on cardboard, newspaper or scrap wood to familiarize yourself with how the spray gun works
and the flow rate (i.e. how fast the material will spray ) before starting any work regardless of experience level.
Start with the paint flow adjuster (8) at its minimum setting so the trigger cannot be pulled. Do not forget that the paint flow adjuster controls the quantity
of paint sprayed. The spray gun will allow you to have great control for the spraying (Fig.5).
The gun has 3 spray patterns which can be changed by the external spray direction plate from either a horizontal fan pattern, to a round
detailed pattern to a vertical fan pattern. When adjusting through patterns you will notice the oval fan pattern width reduce and increase as it moves from
horizontal to vertical positions. This is useful when you have particular size items you need to spray. The maximum width you can spray is 8” down to 1”
on the round pattern.
Horizontal oval fan pattern – is ideal for spraying up and down and for edges left to right (Fig.3).
Vertical oval fan pattern – is ideal for spraying left to right and for edges top to bottom (Fig.3).
Round Spray – is ideal for detailed areas or small objects (Fig.3).
Spraying with your Earlex Spray Station Gemini is very intuitive and through a little practice you will very quickly become a good sprayer.
When practicing – adjust the paint flow adjuster (8), and spray patterns to see the effect this has (Fig.4).
Viscosity
Viscosity is a technical term used to indicate a liquids thickness. Having the correct viscosity of paint is important to ensure the paint atomizes
correctly and sprays well giving you a good quality finish. If your material is thin like water then the viscosity is said to be low, while if thick like latex
interior paint then viscosity is said to be high. Viscosity is measured in seconds.
When spraying direct from the can you may need to dilute by up to 10% if your coating is very thick e.g. exterior latex.
When spraying latex from the quart cup all latex based coatings will need at least 10% dilution. Other coatings such as lacquers, urethanes generally
donʼt but you should always check your paint viscosity with the viscosity cup before you start to add any thinning material.
You should always test the viscosity (or thickness) of paint before spraying to see if thinning is required. The correct viscosity is important to ensure the
paint atomizes correctly and sprays evenly.
Your Earlex Spray Station comes equipped with a viscosity cup, which will help you determine the thickness of the paint. To test a liquids viscosity, dip the
viscosity cup into the material and fill up to the top, lift free and time how long it takes for the paint to empty the viscosity cup - stop when the continuous
flow ends from the bottom of the cup. The time determines the material viscosity and the need for the paint to be thinned before being sprayed.
When using the quart container, the Earlex Spray Station Gemini has a viscosity rating of 180 seconds. If the paint has emptied the viscosity cup
in less than 180 seconds then you will not need to thin your paint or material. If it is above this then thinning will be required. (see thinning section).
2min
Thinning
1) To achieve a horizontal pattern adjust to the horizontal position then pull the trigger and move your arm up and down (Fig.4).
2) When you get to the end of the line, release the trigger, re-position your arm for the return line before continuing to spray whilst overlapping the
last pattern you have sprayed (Fig.4).
3) Next, to achieve a vertical pattern adjust the spray direction plate (4) to the vertical position then pull the trigger and move your arm up and down over
the horizontal strips you have just sprayed slightly overlapping the last strip (Fig.4).
HINT: HVLP technology produces warm air through the air cap allowing the paint to dry quicker which can enhance the final effect and allow you to
apply additional coats if necessary much sooner although you should follow the paint manufacturerʼs recommended drying/curing times where
possible.